← Wednesday, October 21, 2026Performance & OSTool

Cloudflare and VoidZero are building a Rust port of the TypeScript compiler

blog.cloudflare.com 5 min read Editor score 7/10

The teams say tsrs will join the Oxc toolchain, aiming to reduce type-checking time and memory use while following TypeScript's language decisions. The effort highlights the compatibility and governance challenges of reimplementing a widely used compiler.

What
tsrs is a Rust port of the TypeScript compiler being developed by Cloudflare, VoidZero, and Max Schwenk.
How
Early benchmarks report up to 8x faster and about 70% less memory than TypeScript 7.0 with the same number of workers.
Why it matters
Rust's memory model enables straightforward WebAssembly host-guest interactions, supporting development environments in browsers.

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